Method of slagging molten metal
AssigneeHoesch Werke Aktiengesellschaft
InventorsPeter Hausen, Klaus-Dieter Schulz
Life of this patent
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Abstract
A method of slagging off slag, especially treatment slag, from metal baths, particularly iron baths, in vessels such as crucibles and ladles, by means of a rabble while the vessel is slightly tilted. To this end, a slag-free zone starting at the lifted side of the vessel is created by means of a rinsing gas acting on the bath surface on the lifted side of the vessel so that the slag which originally covered the slag-free zone is partially displaced toward the vessel side opposite the slag-free bath surface. The rabble is then lowered onto the slag-free portion of the metal bath and while engaging the slag from behind, the rabble is pushed so as to force the slag over the vessel rim section opposite the slag-free bath surface.
Claims12
A method of removing slag from metal baths, in metallurgical vessels by means of a rabble, which includes the steps of:
- slightly tilting the vessel containing the slag covered metal bath while simultaneously by means of a rinsing gas first creating a slag-free zone on the bath surface at the lifted side of the vessel, subsequent to the creation of the slag-free zone at the temperature of the metal bath applying a synthetic slag powder to the slag-free bath surface to form a coherent viscous slag, placing a rabble on said slag-free zone of the bath surface, and moving said rabble substantially along the plane of said slag-free bath surface zone in the direction toward the lowered side of said vessel thereby pushing the collectively melted synthetically entrapped proceeding slag with the aid of said rabble for removal thereof toward and over the lowered rim arc of said vessel.
Dependencies are inferred from the claim text.